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Mercedes-Benz
Operator's Manual
S 320
S 420
S 500
2
Product information
Kindly observe the following in your own best interest:
We recommend using M...
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1
Mercedes-Benz
Operator's Manual
S 320
S 420
S 500
2
Product information
Kindly observe the following in your own best interest:
We recommend using Mercedes-Benz original parts as well as conversion parts and accessories explicitly approved by us for
your vehicle model. We have tested these parts to determine their reliability, safety and their special suitability for Mercedes-
Benz vehicles.
We are unable to make an assessment for other products and therefore cannot be held responsible for them, even if in individual cases
an official approval or authorization by governmental or other agencies should exist. Use of such parts and accessories could
adversely affect the safety, performance or reliability of your vehicle. Please do not use them. Mercedes-Benz original parts as well as
conversion parts and accessories approved by us are available at your authorized Mercedes-Benz Center where you will receive
comprehensive information, also on permissible technical modifications, and where proper installation will be performed.
Our company and staff congratulate you on the purchase of your new Mercedes-Benz.
Your selection of our product is a demonstration of your trust in our company name. Further, it exemplifies your desire to own an
automobile that will be as easy as possible to operate and provide years of service.
Your Mercedes-Benz represents the efforts of many skilled engineers and craftsmen. To ensure your pleasure of ownership, and
for your safety and that of your passengers, we ask you to make a small investment of your time:
• Please read this manual carefully before putting it aside. Then return it to your vehicle where it will be handy for
your reference.
• Please abide by the recommendations contained in this manual. They are designed to acquaint you with the
operation of your Mercedes-Benz.
• Please abide by the warnings and cautions contained in this manual. They are designed to help improve the safety
of the vehicle operator and occupants.
We extend our best wishes for many miles of safe, pleasurable driving.
DaimlerChrysler AG
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Operator's manual
This Operator's Manual contains a great deal of useful information. We urge you to read it carefully and familiarize yourself with the
vehicle before driving.
For your own safety and longer service life of the vehicle, we urge you to follow the instructions and warnings contained in this
manual. Ignoring them could result in damage to the vehicle or personal injury to you or others. Vehicle damage caused by failure to
follow instructions is not covered by the Mercedes-Benz Limited Warranty.
Your vehicle may have some or all of the equipment described in this manual. Therefore, you may find explanations for optional
equipment not installed in your vehicle. If you have any questions about the operation of any equipment, your authorized Mercedes-
Benz Center will be glad to demonstrate the proper procedures.
Owner’s Service and Warranty Policy
The Owner’s Service and Warranty Information Booklet contains detailed information about the warranties covering your
Mercedes-Benz, including:
• New Car Limited Warranty,
• Emission System Warranty,
• Emission Performance Warranty,
• State Warranty Enforcement Laws (Lemon Laws).
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Important notice for California retail buyers of Mercedes-Benz automobiles
Under California law you may be entitled to a replacement of your vehicle or a refund of the purchase price, if Mercedes-Benz USA,LLC
or its authorized Mercedes-Benz Center fails to conform the vehicle to its express warranties after a reasonable number of repair attempts
during the period of one year or 12 000 miles from original delivery of the vehicle. A reasonable number of repair attempts is presumed for
a retail buyer (1) if the vehicle is out of service by reason of repair of substantial nonconformities for a cumulative total of more than 30
calendar days or (2) the same substantial non-conformity has been subject to repair four or more times and you have at least once
directly notified us in writing of the need to repair the non-conformity and have given us an opportunity to perform the repair
ourselves. Notifications should be sent to the nearest Mercedes-Benz Regional Office listed in the Service and Warranty
Information Booklet.
Maintenance
The Service Booklet describes all the necessary maintenance work which should be performed at regular intervals.
Always have the Service Booklet with you when you take the vehicle to your authorized Mercedes-Benz Center for service.
The service advisor will record each service in the booklet for you.
Roadside assistance
The Mercedes-Benz Roadside Assistance Program provides factory trained technical help in the event of a breakdown. Calls to the
toll-free Roadside Assistance number:
1-800-222-0100 (inthe USA) only
will be answered by Mercedes-Benz Client Assistance Representatives 24 hours a day, 365 days a year.
For additional information refer to the Mercedes-Benz Roadside Assistance Program brochure in your glove box.
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Change of address or ownership
If you change your address, be sure to send in the "Change of Address Notice" found in the Owner's Service
and Warranty Policy Booklet. It is in your own interest that we can contact you should the need arise.
If you sell your Mercedes, please leave all owner's literature with the vehicle to make it available to the next owner.
If you bought this vehicle used, be sure to send in the "Notice of Purchase of Used Car" found in the Owner's
Service and Warranty Policy Booklet.
Operating your vehicle outside the USA or Canada
If you plan to operate your vehicle in foreign countries, please be aware that service facilities or replacement
parts may not be readily available.
Certain Mercedes-Benz models are available for delivery in Europe under our European Delivery Program.
For details, consult your authorized Mercedes-Benz dealer or write to:
In the USA: In Canada:
Mercedes-BenzUSA, Mercedes-Benz Canada, Inc.
LLCEuropean Delivery Department European Delivery Department
One Mercedes Drive 849 Eglinton Avenue East
Montvale, NJ 07645 Toronto, Ontario M4G 2L5
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We continuously strive to improve our product, and ask for your understanding that we reserve the right to make changes in design and
equipment. Therefore, information, illustrations and descriptions in this Operator's Manual might differ from your vehicle.
Optional equipment is also described in this manual, including operating instructions wherever necessary. Since they are special-order
items, the descriptions and illustrations herein may vary slightly from the actual equipment of your vehicle.
If there are any equipment details that are not shown or described in this Operator's Manual, your authorized Mercedes-
Benz Center will be glad to inform you of correct care and operating procedures.
The Operator's Manual and Service Booklet are important documents and should be kept with the vehicle.
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Check Regularly and Before a Long Trip
See Index
The First 1000 Miles (1500 km)
The more cautiously you treat your vehicle during the break-in period, the more satisfied you will be with its
performance later on. Therefore, drive your vehicle during the first 1500 km (1000 miles) at moderate vehicle and
engine-speeds.
During this period, avoid heavy loads (full throttle driving) and high RPM (no more than 2/3 of maximum
permissible speed in each gear as indicated on the speedometer).
Avoid accelerating by kickdown. It is not recommended to brake the vehicle by manually shifting to a lower gear.
We recommend to select positions "3" or "2"only at moderate speeds (for hill driving).
After 1000 miles (1500 km) speeds may be gradually increased to the permissible maximum
Maintenance
We strongly recommend that you have your vehicle serviced by your authorized Mercedes-Benz dealer, in
accordance with the Maintenance Booklet.
Radio Transmitters
Warning!
Never operate radio transmitters equipped with a built-in or attached antenna (i.e. without the telephone
connected to an external antenna) from inside the vehicle while the engine is running. Doing so could lead
to a malfunction of the vehicle's electronic system, possibly resulting in an accident and personal injury.
Radio transmitters, such as a portable telephone or a citizens band unit, should only be used inside the vehicle
if they are connected to an antenna that is installed on the outside of the vehicle.
Refer to the radio transmitter operation instructions regarding use of an external antenna.
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Introduction Trunk 33 Rear Window Sunshade 69
Power window and sliding/Pop-Up roof 34 Rear Window Defroster 70
Product information 2 Power closing assist for door and trunk lid 35 Trunk Lid Release switch 70
Operator's manual 4 Anti-Theft Alarm System 36 Instrument Lamps 71
Consumer Information 143 Power Seats, Front 37 Display Illumination 71
Problems with your vehicle 144 Multicontour Backrest 40 Trip Odometer 71
Reporting Safety Defects 144 Heated Seats 41 Clock 71
Index 148 Armrest, Front 42 Shelf Below Rear Window 72
Power Seats, Rear 43 Antenna 72
Instruments and controls Armrest, Rear 44 Cellular telephone 72
Head Restraints, Rear 44
Instruments and controls 10 Power Head Restraints, Rear 44 Driving
Instrument Cluster 12 Adjustable Steering Wheel 46
Indicator Lamp Symbols 13 Seat belts and Supplemental Restraint
system (SRS) 47
Drinking and driving 74
Catalytic Converter 14 Seat belts 47 Parking Brake 74
Starting and Turning Off the Engine 15 Emergencytensioningretractor(ETR) 50 Driving off 74
Driving Instructions 16 Airbag 51 Automatic Transmission 75
Steering lock 56 Rear Fender Indicator 80
Operation Combination Switch 57 Cruise Control 80
Exterior Lamp Switch 59 Charge Indicator Lamp 82
Air Outlets 22 Inside and exterior Rear View Mirrors 60 Engine Oil Pressure Gauge with Oil 82
Automatic Climate Control 23 Sun Visors 63 Low Engine Oil Level Warning Lamp 82
Rear passenger compartment Adjustable
Air outlet 26
Vanitymirrors 63 Engine Oil Consumption
Fuel Consumption Gauge
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Climate Control 27 Interior Lighting 64 Tachometer 83
Activated Charcoal Control 27 Storage Compartments 65 Fuel Reserve Warning Lamp 84
Car keys 28 Ashtrays 66 Outside Temperature Indicator 84
Infrared Remote Control 29 Lighter 66 Coolant Temperature Gauge 84
Central Locking system 32 Sliding roof with rear pop-up feature 67 Low Engine Coolant Level
Doors 32 Power Windows 68 Warning Lamp 85
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Low Windshield and Headlamp Trunk Lamp 100 Rear Seat Cushion 127
Washer Fluid Level Warning Lamp 85 Spare Wheel, Lug Wrench 100 MERCEDES-BENZ Spare Part Service 127
Exterior Lamp Failure Indicator Lamp 86 First Aid Kit 100
Seat Belt and Lock Warning Lamp 86 Stowing Things in the Vehicle 100 Technical Data. Fuels,
Coolants, Lubricants etc. Consumer
Information
Brake Pad Wear Indicator Lamp 86 Vehicle Jack 101
Brake Warning Lamp 87 Vehicle Tools 101 Identification Plates 130
ABS (Antilock Brake System)
Warning Lamp 88
Storage compartment below vehicle tool
box
101 Vehicle Coverage 131
Electronic Traction System (ETS) 89 Wheels 102 Warranty Coverage 131
Acceleration slip control (ASR) 90 Changing Wheels 103 Technical Data S 320 132
Adaptive damping system (ADS) 92 Tire in Inflation Pressure 106 S 420 134
Emission Control 93 Battery 107 S 500 136
On-Board Diagnostic System
(California models only) 93
Exterior Lamps 108 Fuels, Coolants, Lubricants etc. 138
Traveling Abroad 94 Fuses 113 Capacities 138
Winter Driving 94 Jump Starting 114 Engine Oils 140
Snow Chains 94 Towing the Vehicle 116 Engine Oils Additives 140
Cleaning and Care of the Vehicle 117 Air Conditioner Refrigerant 140
Practical Hints Testing Infrared Remote Control 121 Brake Fluid 140
Front Head Restraints 122 Premium Unleaded Gasoline 140
Hood 96 Manual Closing of Trunk Lid 123 Fuel Requirements 141
Checking Coolant Level 97 Manual Release of Fuel Filler Flap 123 Gasoline Additives 141
Adding Coolant 97 Replacing Wiper Blades 124 Coolants 142
Checking Engine Oil Level 98 Emergency Operation of Sliding Roof 125 Check regularly and before a long trip 152
Checking Automatic Trans. Fluid Level 99 Roof Rack 126
Layout of Poly-V-Belt Drive 126
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Instruments and Controls For more detailed descriptions see specified pages
1 Adjustable air outlet 19 Storage/eyeglasses compartment
2 Exterior lamp switch 20 Lock for storage/eyeglasses compartment and eye glove
3 Parking brake release 21 Glove box (illuminated with key in steering lock
position 2)
4 Hood lock release 22 Rear window defroster switch
5 Parking brake pedal 23 Activated charcoal filter switch
6 Steering wheel adjustment switch 24 Central locking switch, Indicator lamp for anti-theft
alarm
7 Combination switch 25 Hazard warning flasher switch
8 Cruise control 26 Trunk lid release switch
9 Horn, airbag 27 Automatic climate control
10 Instrument cluster 28 Radio
11 Steering lock with ignition/starter switch 29 ASR control switch
12 Adjustable air outlet 30 Ashtray with lighter
13 Heated air supply button - center air outlet 31 Adaptive damping system adjustment switch
14 Non heated/cooled air supply button - center air outlet 32 Seat heater switch
15 Air volume control for left air outlet 33 Mirror adjustment switch
16 Air volume control for left center air outlet 34 Power window switch
17 Air volume control for center air outlet 35 Switch for rear seat head restraints
18 Air volume control for right air outlet 36 Switch for rear window sunshade
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Instrument Cluster
1 Fuel gauge with reserve warning lamp (yellow). See Index 9 Trip odometer. See Index
2 Coolant temperature gauge. See Index 10 Main odometer. See Index
3 Fuel consumption gauge. See Index 11 Outside temperature indicator. See Index
4 Engine oil pressure gauge (bar) with warning lamp (red).
See Index
12 Right turn signal indicator lamp (green) See Index
5 Left turn signal indicator lamp (green). See Index 13 Knob for setting clock. See Index
6 Knob for instrument lamps and trip odometer. 14 Tachometer. See Index
7 Speedometer See Index 15 Clock. See Index
8 ASR function indicator lamp (yellow). See Index
ETS function indicator lamp (yellow). See Index
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Indicator Lamp Symbols
Function Indicator Lamp
High beam Battery not being charged properly. See Index.
Warning Lamp
(should go out with the engine running unless)
Exterior lamp failure. See Index.
ASR or ETS Adjust driving to road condition. See
Index
ADS malfunction. See Index
Fluid level for windshield and headlamp washer
system low. See Index.
ASR malfunction. See Index
Coolant level low. See Index. ETS malfunction. See Index.
Engine oil level low. See Index. ABS malfunction. See Index.
Brake pads worn down. See Index. SRS malfunction. See Index.
Brake fluid low (except Canada). Parking brake
engaged. See Index.
Brake fluid low (Canada only). Parking brake
engaged. See Index.
Fasten seat belts. See Index.
Engine malfunction.
If the lamp comes on when the engine is running, it
indicates a malfunction of the 02-sensor on Federal
version vehicles, and fuel injection system or
emission control system on the California version
vehicles. In either case, we recommend that you
have the malfunction checked as soon as possible.
See Index.
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Catalytic Converter
Your MERCEDES-BENZ is equipped
with monolithic type catalytic converters,
an important element in conjunction with
the O2 sensor to achieve substantial
control of the pollutants in the exhaust
emissions. Keep your vehicle in proper
operating condition by following our re-
commended maintenance instructions as
outlined in your Maintenance Booklet.
Caution!
To prevent damage to the catalytic
converters, use only premium unleaded
gasoline in this vehicle.
Any noticeable irregularities in engine
operation should be repaired promptly.
Otherwise, excessive unburned fuel
may reach the catalytic converter
causing it to overheat.
Warning!
As with any vehicle, do not idle, park
or operate this vehicle in areas where
combustible materials such as grass,
hay or leaves can come into contact
with the hot exhaust system, as these
materials could be ignited.
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Starting and Turning off the Engine
Starter Lock-Out
Important!
The engine can only be started, if the
vehicle was unlocked from the outside.
Before Starting
Engage parking brake and move
gearshift lever to neutral (selector lever
position "P" on automatic
transmissions). Turn key in steering
lock to position 2. The charge indicator
lamp should come on.
Cold Engine
Turn key in steering lock clockwise to
the stop. Do not depress accelerator.
Release key only when the engine is
firing regularly.
Hot Engine
Turn key in steering lock clockwise to
the stop. Do not depress accelerator. If
the engine has not fired after approx. 4
seconds, depress accelerator and
continue cranking until the engine is
firing regularly. Release key and back
off accelerator.
At very high coolant temperatures the
engine starting time can be shortened if
the accelerator is depressed slowly at
the beginning of the starting process.
Turning Off
Turn the key in the steering lock to
position 0 to stop the engine.
The key can only be removed with the
selector lever in position "P".
If the coolant temperature is very high
(e.g. after hard driving on mountain
roads), do not shut off the engine
immediately, but allow it to run for 1 -2
minutes at increased idle speed with
selector lever in position "P" or "N".
Important!
Due to the installed starter non-repeat
feature, the key must be turned
completely to the left before attempting
to start the engine again.
Observe the oil pressure gauge
immediately after starting the engine.
In a very cold engine the oil pressure
will rise slowly after the engine has
started. Do not speed up the engine
before pressure is registered on the
pressure gauge. If you do not see the
gauge register oil pressure, stop the
engine and have it checked.
The battery charge indicator lamp
should go out as soon as the engine
has started.
In areas where temperatures
frequently drop below -25°C (-13°F)
we recommend that an engine block
heater be installed. Your authorized
MERCEDES-BENZ dealer will advise
you on this subject.
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Driving Instructions
Power Assistance
Warning!
When the engine is not running, the
brake and steering systems are
without power assistance. Under
these circumstances, a much greater
effort is necessary to stop or steer the
vehicle.
Brakes
Caution!
When driving down long and steep
grades, relieve the load on the brakes by
shifting into "3", "2" or "B" (model S
320: "3" or "2"). This helps prevent
overheating of the brakes and reduces
brake pad wear. Do not exceed engine
speed limits. Refer to Technical Data for
downshift points.
After hard braking, it is advisable to
drive on for some time, rather than
immediately parking, so the air stream
will cool down the brakes faster.
Warning!
After driving in heavy rain for some
time without applying the brakes or
through water deep enough to wet
brake components, the first braking
action may be somewhat reduced
and increased pedal pressure may be
necessary. Be sure to maintain a safe
distance from vehicles in front.
Resting your foot on the brake pedal
will cause excessive and premature
wear of the brake pads.
It can also result in the brakes
overheating thereby significantly
reducing their effectiveness. It may
not be possible to stop the car in
sufficient time to avoid an accident.
The condition of the parking brake
system is checked each time the car is
in the shop for the required
maintenance.
All checks and maintenance work on
the brake system should be carried out
by an authorized MERCEDES-BENZ
dealer.
If the parking brake is released and the
brake warning lamp in the instrument
cluster stays on, the brake fluid level in
the reservoir is too low.
Brake pad wear or a leak in the system
may be the reason for low brake fluid
in the reservoir.
Have the brake system inspected at an
authorized Mercedes-Benz dealer
immediately.
Install only brake pads and brake fluid
recommended by Mercedes-Benz.
Warning!
If other than recommended brake
pads are installed,...